gas gauge

First of all hello everyone;
I just joined the forum today, I hope I find the answers I am looking for ...

I bought a hand peugeot 307 from a lady, I am newer. Generally I am satisfied with the car, but the problem I am experiencing today started to cool me. My car was 1.6 xr gasoline. I had gasoline in the baggage from GOD. I added it to the car. After going 10 km this time, the light started to come on. I immediately bought gasoline.
what should I do?
Is it costly?

My car is all about display, 1/8 more show, like gasoline. It is probably related to the reaction of the indicator. You need to have the bottom point determined according to your own. The cleanest tube is needed.